Shock absorber



P. PETRI.

SHOCK ABSORBER.

APPLICATION FILED APR. 13, I92I.

1 ,405,937, Patented Feb. 7, 1922.

. PETER Pie'rirr, or LACoN, rLrQiNors.

Y, snoek ABsoRBER.

To all 'whom t may concern:

Be it knownthatl, ln'rniiPnrrir, a citizen of the UnitedStates, residing at Lacon, 1n

the county ot Marshall a'nd'State oli-Illinois,

have invented certain 'new'V and useful Improvements in Shock Absorbers, otwhich the following is a speciiication.

This invention relates to anew and-improved shock4v absorber, and particularly to a device of this characteradapted to be interposed between the usual'vehicle spring and vfixed shackle to which such springs are normally attached. f

In connection with a number oi light cars nowi in use, the usual spring equipment al'- lowsa large amount of side sway and .free

, movement ot the body, and whijleit is desirable to add additional shock absorbing means it is necessary thatfthis means ,bey so constructed as not to increasethe side sway or` rebound movement. Y

It is an object ot the present inventionto provide a shock 'absorberl ot this'character whichis simple indesign and composedof relatively ifew'parts, and which maybe applied to existingY vehicleswithout substantial change in their construction. Y It is a further objectto provi le a device which. is provided with means adapted to limit rebound. f Y

t is an additional object to provide' a device comprised otelements which may be manufactured at relatively low cost. Other and further objects will appear as the descriptionfproceeds.

' Broadly, my shock absorber` comprises a lever pivoted to the usual iixed shackle, with its tree end bearing on the spring, and a second lever pivotally connected to the free end of the fixed lever and extending above said viirst lever. The free end ofthe second lever is connected to the end of the vehicle motor spring and a sprincr is interposed between the two levers. Means are provided associated with the levers and with the vehicle axle adapted toV limit rebound movement.v

l havev illustrated a preferred embodiment of my invention in the accompanying drawings, the single figure ot which shows my shock absorber applied to vehicle elements or the type in use upon the Ford car.

The axle ihas secured thereto the usual fixed shackle 6. Pivotedly secured to this shackle is the lever 7, the free end ot which Specification of Letters Patent.

'above that lever.

Patented Feb; 7, 19272.

Application led vApril 13, 1921. Serial No. 461,086."

bears upon the spring 8 at the point V9. The lever 7 is provided with the downwardly extendlng lugs 10 which engage the sides of the spring to prevent the lever from slipping y laterally therefrom. The second lever 11 is pivoted to the 'fixed lever at'lO and extends The co-il spring `12 is in' terposedlbetweenv the'central portions of ythe two levers. The free end of the second lever l1 isconnected by the li1iks13'to the end 14 of the vehicle spring- 8, two links 13 being provided, one passing upon either'side of the lever 7.' The lever '11 is provided with the inwardly extending lug`15 -to which' is securedthe snubbing straplby 'means of the bolt 17 and' clamp 18. This strap ex# tends downwardly in a loop about'the axle 5, and as shown, its lower portion'is nor; mallyf` spaced therefrom. It will be observed that in assembling vmy shcckabsorber relativekto the springB and shackle .6, the latter is turned outwardly insteadofinwardly to connect directly with i Jthe nutlli of the spring, as :is customarymin. n'

vehicle. These small vibrations may Y, f

taken up entirely by the spring 12 and the most iiexible portion of the spring 8, namely, that portion between the point 9 and the end 14.. Y

This device does not add any side sway, but instead minimizes such movement, particularly in view of the fact that a longer spring outwardly, as has been stated. The strap 16 is normally. out of engagement with the axle and is adapted to engage that axle to prevent excessive rebound. Its action, since vit is transmitted to the spring through the shock absorber, does `not have the sudden jarring stop which is transmitted to the body by' constructions in which the snubbing device is directly connected to the body.

lVhile the device has been shown in conbase is given, since the shackle 6 is turned nection with the parts Yof the standard Ford f A car` it is obviously applicable to other vehicle designs, and any necessary changes in construction may be ymade to adapt lit to they particular design rwith which it is to be used, the present showing being illustrative only. I- claim: l. A shocky absorber adapted for use in association with a vehicle spring and fixed yspring shackle, comprising a lev'er pivotedly asso-Y ciated with the shackle and bearing'on said spring, asecond lever pivotedly connected to the free end of the first lever, the second lever extending adjacent the first lever, a

spring interposed therebetween, and means connecting :the .free endV of the second lever 4lto the .vehicle spring;

2.' A. shock absorber adapted for use in association with a vehicle spring and fixed spring shackle, comprising a lever pivotedly associated-withtheshackle and bearing on said spring, a second lever pivotedlyconnected .to the -free end of the first lever, the secondl lleverextending above the firstlever, a compression spring interposed therebetween, and means connecting the free end of the second-lever to the vehicle spring.

3, Af'shockabsorber adapted .for use in association with a vehicle spring andlixed Spring'shackld comprising a lever pivotedly associated with the shackle and bearing on the lever, the lever being provided with ears engagingfthe spring to prevent lateral displacement therefrom, a second lever pivote'dly connected toV the-free end of the first v lever, the second lever extending adjacent the first lever, a spring interposed therebetween, and a pairof links extending on opposite-sides of the first lever and connecting the second'lever to thespring.

5. A shock absorber adapted for use in association with a vehicle spring, vehicle axle and fixed spring shackle, comprising a lever p'ivotedly associated with the shackle `and' bearing onrsaid spring, a secondllever pivotedly connectedto the Vfree end ofthe 'rst lever, a spring'interposed between the two levers, means connecting the free l end of the second leverto the vehiclespring, and p a snubbing member associated with said levers and the vehicle axle 'to limit rebound'.`

association with a vehicle spring, vehicle axle and fixed 'spring shackle, comprising a lever .pivotedly associated VAwith the shackle and bearing.Y on said spring, a second lever piv- 6o 6. A shock absorber adapted'for use in ot edly 'connectedV to vthe-free end .of the first lever, a spring interposed between the two levers, lmeans connecting thevfree end of the second lever to the vehicle spring, and a snubbing member attached to the second lever and adapted to engage'the vehicle axle tolimit rebound. Y

7, A shockl absorber adapted for use in* 'association with a` vehicle spring, vehicle axle and fixed spring shackle, comprising al lever -pivotedly associated withy kthe shackle and bearing on s'aid'spring, a Asecond lever pivotedly connected tothe freefend ofthe first lever, a spring interposed betweentlie two levers, means connecting'the free'en/d of.'

snubbing member attached -to ya lug onthe Y second lever extending inwardly beyond the junction of the two levers, said member v'encirclingthe vehicle axle and being normally out of engagement therewith.

Signed at Chicago, illinois, this 11th davV of* April, 1921'. s PETER PETRI so the second lever ,to the vehicle s pring,`and ay l Y 

